Citation: LI Liang, LIU Li-Fen, YANG Feng-Lin. Reduction of Nitrate by g-C₃N₄-TiO₂ Photocatalyst on Electrode Coupled with Electricity Generating Bio-anode[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(4): 637-643. doi: 10.11862/CJIC.2017.082 shu

Reduction of Nitrate by g-C₃N₄-TiO₂ Photocatalyst on Electrode Coupled with Electricity Generating Bio-anode

LI Liang ¹ ,
LIU Li-Fen ^1,2 ,
YANG Feng-Lin ^1,*,,

1.
Dalian University of Technology, Dalian, Liaoning 116024, China
2.
School of Environmental Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, China

Corresponding author: YANG Feng-Lin, lifenliu@dlut.edu.cn
Received Date: 20 December 2016
Revised Date: 3 March 2017

Figures(15)

Photocatalytic reduction of nitrate and/or nitrite is performed using g-C₃N₄-TiO₂ as photocatalytic cathode combined with electricity generating bio-anode. Effect on photocatalytic reduction of nitrate is investigated from hole scavenger, aeration conditions and biological anode, respectively, and the reduction mechanism is analyzed. The result shows that the system has the best removal efficiency with a biological anode and exposure to nitrogen, while hole scavenger has the least effect on photocatalytic reduction. The removal of nitrate is 72.57% and the concentration of nitrite (by-product) is 0.31 mg·L^-1 after 210 min of reaction, while ammonia is not detected. The supported catalyst does not fall off and the catalyst activity remains essentially unchanged after repeated experiments, which means the catalyst and electrode can be reused.
- photocatalysis,
- biological anode,
- graphitic carbon nitride,
- titanium dioxide,
- nitrate
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Reduction of Nitrate by g-C₃N₄-TiO₂ Photocatalyst on Electrode Coupled with Electricity Generating Bio-anode